hmm...well if you want really cheap prices you can check out www.futurlec.com they have quite good prices.but when your searching it doesnt come up with very good results. so try using the item type. eg. instead of 120ohm resistor type resistor and select it from the list that appears. hope this helped you

hmm...well if you want really cheap prices you can check out www.futurlec.com they have quite good prices.but when your searching it doesnt come up with very good results. so try using the item type. eg. instead of 120ohm resistor type resistor and select it from the list that appears. hope this helped you

The link is http://www.freewebs.com/smash-robotics/sonarbot.htmand Smash , the treads are on soooo loosely , they will come off in about 5 minutes, I doubt that they can drive the bot at all in that condition. Buy a tank toy and hack it with tracks attached , or don't use tracks at all!

Remember , think of what sensors you will add to truly make it a robot and not a chassis